| Acronym | Meaning |
| PVC | Pigment Volume Concentration |
| ARSCFC | Approximate Relativistic SCF (with) Corrections |
| GMO | Generalized Molecular Orbital |
| DIMP | Diisopropyl Methylphosphonate |
| CEGB | Central Electricity Generating Board |
| NMIJ | National Metrology Institute Of Japan |
| MET | Many Electron Theory (for Singlet Ground State) |
| ORU | In Orbit Replaceable Unit (spacecraft) |
| MOBK | Modified Oppenheimer-Brinkman-Kramers (approxn. In Calcns. On Atomic And Molecular Collisions With Ions) |
| ECSC | European Coal And Steel Community |